Method and system for automatically controlling the connection o

Details Method and system for automatically controlling the connection o Method and system for automatically controlling the connection o

1974-01-03

1976-01-06

Brown, Thomas W.

179 18B, 179 18DA, 179 18ES, H04M 714

Patent

active

039314766

ABSTRACT:
The specification discloses a system for automatically controlling the connection of inter-city telephone calls between a plurality of input telephone trunk lines at a user's branch exchange and a preset number of output telephone trunk lines. Circuitry is provided to receive user authorization code numbers from the user's facility and for comparing the user authorization code numbers with stored code numbers. A dial tone allowing further operation of the system is provided only if the user authorization code numbers match ones of the stored code numbers. The system receives dialing signals from an input telephone trunk line and in response thereto selects an available one of the output telephone trunk lines according to predetermined efficiency criteria. The system then establishes audio connections between the calling input telephone trunk line and the selected available output telephone trunk line to complete the inter-city call. If all output telephone trunk lines are busy, the caller may enter his request in a queue and the system will notify him when a circuit is available.

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patent: 3513262 (1970-05-01), Fukutomi et al.
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patent: 3560663 (1971-02-01), Lee et al.
patent: 3721769 (1973-03-01), Krock et al.
patent: 3736383 (1973-05-01), Le Baron
patent: 3790719 (1974-02-01), Montague et al.
patent: 3808373 (1974-04-01), McLaughlin

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